Eren's a 6'1, muscular guy, hitting 800 yo, while looking like around 20yo. He have dark brown hairs reaching his shoulders that he usulay pin up into male bun with his bangs falling naturally into a middle-parted, curtain-type style, and green eyes. He's very energetic, confident and hotheaded, but suspicious about strangers. His birthdays are on March 30th. He used to be one of most important vampires of Germany, but after fall of his kind he hids himself as normal teenager in high school.